From 0a1c24adf81bced6328a585e956a1d05246e1acf Mon Sep 17 00:00:00 2001
From: David Leverton <levertond@googlemail.com>
Date: Thu, 28 Aug 2014 21:36:08 +0100
Subject: Remove --enable-visibility

Always enable for GCC (versions that don't have it are way too old
anyway).  Disable for clang for now because of
http://llvm.org/bugs/show_bug.cgi?id=20521
---
 configure.ac | 38 +++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index a99e14257..8640008fd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -450,25 +450,25 @@ CXXFLAGS="$save_CXXFLAGS"
 
 dnl {{{ visibility support
 AC_MSG_CHECKING([whether to enable visibility])
-AC_ARG_ENABLE([visibility],
-			  AS_HELP_STRING([--enable-visibility], [Enable visibility (g++-4.1)]),
-			  [ENABLE_VISIBILITY=$enableval],
-			  [ENABLE_VISIBILITY=no])
-AC_MSG_RESULT([$ENABLE_VISIBILITY])
-AC_SUBST([ENABLE_VISIBILITY])
-if test "x$ENABLE_VISIBILITY" = "xyes" ; then
-	AC_MSG_CHECKING([for appropriate compiler visibility flags])
-	old_PALUDIS_CXXFLAGS=$PALUDIS_CXXFLAGS
-	PALUDIS_CXXFLAGS=
-	CHECK_CXXFLAG([-fvisibility-inlines-hidden])
-	CHECK_CXXFLAG([-fvisibility=hidden])
-	AC_MSG_RESULT([$PALUDIS_CXXFLAGS])
-	PALUDIS_CXXFLAGS_VISIBILITY="$PALUDIS_CXXFLAGS -DPALUDIS_ENABLE_VISIBILITY=1"
-	PALUDIS_CXXFLAGS=$old_PALUDIS_CXXFLAGS
-	PALUDIS_ENABLE_VISIBILITY=1
-else
-	PALUDIS_ENABLE_VISIBILITY=0
-fi
+AC_PREPROC_IFELSE([AC_LANG_SOURCE([
+#if ! defined(__GNUC__) || defined(__clang__)
+#  error no/broken visibility
+#endif
+])],
+	[AC_MSG_RESULT([yes])
+	 AC_MSG_CHECKING([for appropriate compiler visibility flags])
+	 old_PALUDIS_CXXFLAGS=$PALUDIS_CXXFLAGS
+	 PALUDIS_CXXFLAGS=
+	 CHECK_CXXFLAG([-fvisibility-inlines-hidden])
+	 CHECK_CXXFLAG([-fvisibility=hidden])
+	 AC_MSG_RESULT([$PALUDIS_CXXFLAGS])
+	 PALUDIS_CXXFLAGS_VISIBILITY="$PALUDIS_CXXFLAGS -DPALUDIS_ENABLE_VISIBILITY=1"
+	 PALUDIS_CXXFLAGS=$old_PALUDIS_CXXFLAGS
+	 PALUDIS_ENABLE_VISIBILITY=1
+	],
+	[AC_MSG_RESULT([no])
+	 PALUDIS_ENABLE_VISIBILITY=0
+	])
 AC_SUBST([PALUDIS_ENABLE_VISIBILITY])
 AC_SUBST([PALUDIS_CXXFLAGS_VISIBILITY])
 dnl }}}
-- 
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